<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"> 添加用户 </el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"> </el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserId(scope.row.id)"> </el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"> </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
      <!-- 添加用户对话框 -->
      <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
        <!-- 内容主体区域 -->
        <el-form ref="addFormRef" :model="addForm" :rules="addFormRules" label-width="70px">
          <!-- 用户名 -->
          <el-form-item prop="username" label="用户名">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <!-- 密码 -->
          <el-form-item prop="password" label="密码">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <!-- 邮箱 -->
          <el-form-item prop="email" label="邮箱">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <!-- 手机 -->
          <el-form-item prop="mobile" label="手机">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 脚部按钮区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 修改用户对话框 -->
      <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <!-- 主体内容 -->
        <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
          <!-- 用户名 -->
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <!-- 邮箱 -->
          <el-form-item prop="email" label="邮箱">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <!-- 手机 -->
          <el-form-item prop="mobile" label="手机">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 分配角色的对话框 -->
      <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
        <div>
          <p>当前的用户：{{ userInfo.username }}</p>
          <p>当前的角色：{{ userInfo.role_name }}</p>
          <p>
            分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"> </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    //验证手机号的校验规则
    const checkMobile = (rule, value, cb) => {
      let reg = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (reg.test(value)) {
        //合法手机号
        cb()
      } else {
        cb(new Error('手机号码格式不正确'))
      }
    }
    //验证邮箱的校验规则
    const checkEmail = (rule, value, cb) => {
      let reg = /^[A-Za-z0-9]+([_\.][A-Za-z0-9]+)*@([A-Za-z0-9\-]+\.)+[A-Za-z]{2,6}$/
      if (reg.test(value)) {
        //合法邮箱号
        cb()
      } else {
        cb(new Error('请输入合法邮箱'))
      }
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        //当前页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2,
      },
      userList: [],
      total: 0,
      //控制添加用户按钮显示和隐藏
      addDialogVisible: false,

      //这是添加用户表单form的数据绑定对象
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      //这是表单验证规则对象
      addFormRules: {
        //验证用户名是否合法
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur',
          },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur',
          },
        ],
        //验证密码是否合法
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur',
          },
          {
            min: 6,
            max: 16,
            message: '长度在 6 到 16 个字符',
            trigger: 'blur',
          },
        ],
        //验证邮箱是否合法
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur',
          },
          { validator: checkEmail, trigger: 'blur' },
        ],
        //验证手机是否合法
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' },
        ],
      },
      editDialogVisible: false,
      //查询用户表单信息对象
      editForm: {},
      //修改表单的验证规则
      editFormRules: {
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur',
          },
          { validator: checkEmail, trigger: 'blur' },
        ],
        //验证手机是否合法
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' },
        ],
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: '',
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo,
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户失败')
      }
      this.userList = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    //监听pagesize改变的事件
    handleSizeChange(newSize) {
      //   console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    //监听页码值改变事件
    handleCurrentChange(newSize) {
      this.queryInfo.pagenum = newSize
      this.getUserList()
    },
    //监听 switch 开关状态
    async userStateChanged(userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        this.userInfo != this.userInfo
        return this.$message.error(res.meta.msg)
      }
      return this.$message.success(res.meta.msg)
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮，添加新用户,表单预验证
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return
        //否则进行下一步网络请求
        const { data: res } = await this.$http.post('user', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error(res.meta.msg)
        }
        this.$message.success(res.meta.msg)
        //隐藏对话框
        this.addDialogVisible = false
        // 重新获取用户列表
        this.getUserList()
      })
    },
    //展示修改用户对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    //监听添加用户对话框的关闭事件,进行重置表单
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    //进行修改用户表单预验证，确定并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return
        //下面验证通过，发起修改用户信息的请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg)
        }
        //关闭对话框
        this.editDialogVisible = false
        //刷新用护列表数据
        this.getUserList()
        //提示用户修改成功
        this.$message.success(res.meta.msg)
      })
    },
    //根据id删除对应的用户信息
    removeUserId(id) {
      //弹框提示用户是否删除用户信息
      this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      })
        //用户按确定按钮
        .then(async () => {
          const { data: res } = await this.$http.delete('users/' + id)
          if (res.meta.status !== 200) {
            return this.$message.error('删除用户失败！')
          }
          //删除成功
          this.$message({
            type: 'success',
            message: '删除成功!',
          })
          //重新获得用户列表
          this.getUserList()
        })
        //用户按取消按钮
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除',
          })
        })
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolesList = res.data

      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }

      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId,
      })

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }

      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    },
  },
}
</script>

<style lang="less" scoped>
</style>